On 2/28/17, BrianS <[hidden email]> wrote:
> I am looking for a midi sound module, something cheap, like the Keytron or
> Edirol modules, but with reasonably good sound.
> Anyone here know where I can buy one?
I'd recommend that you look seriously at multichannel USB Audio Interfaces. Sure these will be more expensive than just a card for the PI but you are guaranteed the best quality audio as they often use professional grade preamps internally and have high-speed audio processors.
As an example I use a Focusrite Saffire 6 USB with Hauptwerk on Windows. I haven't had time to check it on the Pi or Beaglebone with Linux and jOrgan but on researching I just found this post (there are others) that indicate that it will work under Linux :
"The good news is that I can confirm that the new focusrite saffire 6 in usb2.0 works well with alsa/linux. I am very happy."